L Carnitine Tartrate Amino Acid 1,500 mg Benevolent Nourishment L Carnitine, Amino Acid, Mixed Berry, 3,000 mg, 16 oz (473 ml) L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians Nature's Bounty L Carnitine Amino Acid Supplement, 500 mg30 caplets 1 Each Ingredient Spotlight: L Carnitine Source: Biosynthesised in the body from the amino acids Lysine and Methionine, L Carnitine is a conditionally essential nutrient involved in energy metabolism and fat transport. Key Benefits Acetyl L Carnitine HCL Enhance Energy, Fat Metabolism & Cognitive Function